“Yes, it is absurd [to say that without God, murder is permissible], because even according to your sacred fables Moses murdered an Egyptian and then looked around to make sure no one saw him before trying to conceal the body, and the same goes for the myth of Cain and Abel, where Cain lied about killing his brother. Both of these characters obviously already knew that murder was wrong a long time before the story of the Ten Commandments, and this might be because Hammurabi had already established the code of law many centuries earlier than these myths found their way into the Bible, or it might be that, like most social animals, even superstitious savages understood that you shouldn't kill or maim other members of your own society (unless your religion commands it). One minute, God supposedly says "thou shalt not kill", and the next minute He orders His own people to kill every man and his brother, except of course for Moses's brother who really should have been the only one who was killed in that story. But somehow he was spared and promoted to priest instead; saved by nepotism. Then God told them all to kill all their neighbors, every man, woman and child, including the infants and the unborn. But the fact is that murder is still wrong, regardless of what God has to say about it, and there is still no justification when God allegedly commands His prophets to plunder communities and commit genocide.”

Youtube, Other, The Damn Commandments https://www.youtube.com/watch?v=8u3z69YpLx0 (January 7, 2015)